mac80211: support remain-on-channel command

This implements the new remain-on-channel cfg80211
command in mac80211, extending the work interface.

Also change the work purge code to be able to clean
up events properly (pretending they timed out.)

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 2cd880e444d..a7bbfc40a64 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -106,9 +106,13 @@ void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local)
                 /*
                  * only handle non-STA interfaces here, STA interfaces
                  * are handled in ieee80211_offchannel_stop_station(),
-                 * e.g., from the background scan state machine
+                 * e.g., from the background scan state machine.
+                 *
+                 * In addition, do not stop monitor interface to allow it to be
+                 * used from user space controlled off-channel operations.
                  */
-                if (sdata->vif.type != NL80211_IFTYPE_STATION)
+                if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+                    sdata->vif.type != NL80211_IFTYPE_MONITOR)
                         netif_stop_queue(sdata->dev);
         }
         mutex_unlock(&local->iflist_mtx);